Service Manual
Page 1
... 330 29 CM1972 CM2472 < Applicable Indoor Units > ●Wall mounted type KMS0772 KMS0972 KMS1272 KMS1872 KMS2472 NOTE For details about the combination, refer to "Unit Combination Table" in the Appendix of this manual. REFERENCE NO. CM3172 IMPORTANT These air conditioners employ new refrigerant R410A. TECHNICAL & SERVICE MANUAL OUTDOOR UNIT : CM1972 CM2472 CM3172 FILE NO. Destination: North America DC INVERTER MULTI-SYSTEM AIR CONDITIONER Capacity at 230V 19,700 BTU/h 25,400 BTU/h 30,600 BTU/h Outdoor Model No...
... 330 29 CM1972 CM2472 < Applicable Indoor Units > ●Wall mounted type KMS0772 KMS0972 KMS1272 KMS1872 KMS2472 NOTE For details about the combination, refer to "Unit Combination Table" in the Appendix of this manual. REFERENCE NO. CM3172 IMPORTANT These air conditioners employ new refrigerant R410A. TECHNICAL & SERVICE MANUAL OUTDOOR UNIT : CM1972 CM2472 CM3172 FILE NO. Destination: North America DC INVERTER MULTI-SYSTEM AIR CONDITIONER Capacity at 230V 19,700 BTU/h 25,400 BTU/h 30,600 BTU/h Outdoor Model No...
Service Manual
Page 2
... on contact with a stove, gas water heater, electric room heater or other heat source, it is an important part of wiring have been left inside a room to walls and floors. Escaped refrigerant gas, on the installation location (especially a damp or humid location). Important! For safe installation and trouble-free operation, you need for leaks before opening the unit to provide a solid, level foundation for Heat Pump-type Systems) Install the outdoor unit on the air conditioner can produce dangerously toxic gas...
... on contact with a stove, gas water heater, electric room heater or other heat source, it is an important part of wiring have been left inside a room to walls and floors. Escaped refrigerant gas, on the installation location (especially a damp or humid location). Important! For safe installation and trouble-free operation, you need for leaks before opening the unit to provide a solid, level foundation for Heat Pump-type Systems) Install the outdoor unit on the air conditioner can produce dangerously toxic gas...
Service Manual
Page 6
...Unit Specifications Outdoor Unit CM1972 Indoor Unit KMS0972 × 3 Type Number of Connectable Indoor Units Number of Operatable Indoor Units Voltage Rating Performance Electrical Rating Total Capacity Sensible Capacity Latent Capacity Air Circulation (High) Available Voltage Range Running Amperes Power Input Power Factor EER SEER Compressor Locked Rotor Amperes Fuse or Circuit Breaker Capacity BTU/h kW BTU/h BTU/h ft3/min (m3/h) V A W % BTU/h/W BTU/Wh A A Features Control Fan Speeds Compressor Refrigerant / Amount charged at shipment Refrigerant Control Operation Sound (High) Cool...
...Unit Specifications Outdoor Unit CM1972 Indoor Unit KMS0972 × 3 Type Number of Connectable Indoor Units Number of Operatable Indoor Units Voltage Rating Performance Electrical Rating Total Capacity Sensible Capacity Latent Capacity Air Circulation (High) Available Voltage Range Running Amperes Power Input Power Factor EER SEER Compressor Locked Rotor Amperes Fuse or Circuit Breaker Capacity BTU/h kW BTU/h BTU/h ft3/min (m3/h) V A W % BTU/h/W BTU/Wh A A Features Control Fan Speeds Compressor Refrigerant / Amount charged at shipment Refrigerant Control Operation Sound (High) Cool...
Service Manual
Page 7
.... Outdoor Unit CM1972 Indoor Unit KMS0972 × 3 Type Number of Connectable Indoor Units Number of Operatable Indoor Units Voltage Rating Performance Electrical Rating Total Capacity Sensible Capacity Latent Capacity Air Circulation (High) Available Voltage Range Running Amperes Power Input Power Factor EER SEER Compressor Locked Rotor Amperes Fuse or Circuit Breaker Capacity BTU/h kW BTU/h BTU/h ft3/min (m3/h) V A W % BTU/h/W BTU/Wh A A Features Control Fan Speeds Compressor Refrigerant / Amount charged at shipment Refrigerant Control Operation Sound (High) Cool Refrigerant...
.... Outdoor Unit CM1972 Indoor Unit KMS0972 × 3 Type Number of Connectable Indoor Units Number of Operatable Indoor Units Voltage Rating Performance Electrical Rating Total Capacity Sensible Capacity Latent Capacity Air Circulation (High) Available Voltage Range Running Amperes Power Input Power Factor EER SEER Compressor Locked Rotor Amperes Fuse or Circuit Breaker Capacity BTU/h kW BTU/h BTU/h ft3/min (m3/h) V A W % BTU/h/W BTU/Wh A A Features Control Fan Speeds Compressor Refrigerant / Amount charged at shipment Refrigerant Control Operation Sound (High) Cool Refrigerant...
Service Manual
Page 8
Outdoor Unit CM2472 Indoor Unit KMS0972 × 3 Type Number of Connectable Indoor Units Number of Operatable Indoor Units Voltage Rating Performance Electrical Rating Total Capacity Sensible Capacity Latent Capacity Air Circulation (High) Available Voltage Range Running Amperes Power Input Power Factor EER SEER Compressor Locked Rotor Amperes Fuse or Circuit Breaker Capacity BTU/h kW BTU/h BTU/h ft3/min (m3/h) V A W % BTU/h/W BTU/Wh A A Features Control Fan Speeds Compressor Refrigerant / Amount charged at shipment Refrigerant Control Operation Sound (High) Cool Refrigerant Tubing...
Outdoor Unit CM2472 Indoor Unit KMS0972 × 3 Type Number of Connectable Indoor Units Number of Operatable Indoor Units Voltage Rating Performance Electrical Rating Total Capacity Sensible Capacity Latent Capacity Air Circulation (High) Available Voltage Range Running Amperes Power Input Power Factor EER SEER Compressor Locked Rotor Amperes Fuse or Circuit Breaker Capacity BTU/h kW BTU/h BTU/h ft3/min (m3/h) V A W % BTU/h/W BTU/Wh A A Features Control Fan Speeds Compressor Refrigerant / Amount charged at shipment Refrigerant Control Operation Sound (High) Cool Refrigerant Tubing...
Service Manual
Page 9
...: Cooling : Indoor air temp. 80°F D.B./ 67°F W.B. The values shown in this manual. Outdoor Unit CM2472 Indoor Unit KMS0972 × 3 Type Number of Connectable Indoor Units Number of Operatable Indoor Units Voltage Rating Performance Electrical Rating Total Capacity Sensible Capacity Latent Capacity Air Circulation (High) Available Voltage Range Running Amperes Power Input Power Factor EER SEER Compressor Locked Rotor Amperes Fuse or Circuit Breaker Capacity BTU/h kW BTU/h BTU/h ft3/min (m3/h) V A W % BTU/h/W BTU/Wh A A Features Control Fan Speeds Compressor Refrigerant...
...: Cooling : Indoor air temp. 80°F D.B./ 67°F W.B. The values shown in this manual. Outdoor Unit CM2472 Indoor Unit KMS0972 × 3 Type Number of Connectable Indoor Units Number of Operatable Indoor Units Voltage Rating Performance Electrical Rating Total Capacity Sensible Capacity Latent Capacity Air Circulation (High) Available Voltage Range Running Amperes Power Input Power Factor EER SEER Compressor Locked Rotor Amperes Fuse or Circuit Breaker Capacity BTU/h kW BTU/h BTU/h ft3/min (m3/h) V A W % BTU/h/W BTU/Wh A A Features Control Fan Speeds Compressor Refrigerant...
Service Manual
Page 19
Refrigerant Flow Diagram Outdoor Unit CM1972 Indoor unit Wide tube O.D.3/8" O.D.3/8" O.D.3/8" Service valve on narrow tube CN Electric expansion valve M BN M AN M Strainer Header Cooling cycle Insulation of Refrigerant Tubing IMPORTANT Because capillary tubing is used in the outdoor unit, both tubes must be a min.5/16"(8 mm). To prevent heat loss and wet floors due to break or crack. REFRIGERANT FLOW DIAGRAM 4-1. The thickness of this air conditioner become cold. Compressor Heat exchanger Narrow...
Refrigerant Flow Diagram Outdoor Unit CM1972 Indoor unit Wide tube O.D.3/8" O.D.3/8" O.D.3/8" Service valve on narrow tube CN Electric expansion valve M BN M AN M Strainer Header Cooling cycle Insulation of Refrigerant Tubing IMPORTANT Because capillary tubing is used in the outdoor unit, both tubes must be a min.5/16"(8 mm). To prevent heat loss and wet floors due to break or crack. REFRIGERANT FLOW DIAGRAM 4-1. The thickness of this air conditioner become cold. Compressor Heat exchanger Narrow...
Service Manual
Page 36
.... For this reason, the value may vary from the actual cooling characteristics. 3. Above data represents the value when the operation frequency of a compressor is fixed. 36 TEMP. °F (°C) W.B. Cooling Capacity Outdoor Unit : CM1972 Indoor Unit : KMS0972 × 3 Power Supply : 230V Single Phase 60Hz < Cooling Capacity > RATING CAPACITY: INDOOR ENT. D.B. 19,700 BTU/h 65 (18.3) TC 19,800 AIR FLOW RATE: OUTDOOR AMBIENT TEMP. °F (°C) 75 (23.9) 85 (29.4) 95 (35...
.... For this reason, the value may vary from the actual cooling characteristics. 3. Above data represents the value when the operation frequency of a compressor is fixed. 36 TEMP. °F (°C) W.B. Cooling Capacity Outdoor Unit : CM1972 Indoor Unit : KMS0972 × 3 Power Supply : 230V Single Phase 60Hz < Cooling Capacity > RATING CAPACITY: INDOOR ENT. D.B. 19,700 BTU/h 65 (18.3) TC 19,800 AIR FLOW RATE: OUTDOOR AMBIENT TEMP. °F (°C) 75 (23.9) 85 (29.4) 95 (35...
Service Manual
Page 54
... then quickly stops, when the outdoor unit operates. (There is outdoor unit controller trouble or motor trouble. Important: (A) Turn OFF the power before connecting or disconnecting the motor connectors. (B) When performing voltage measurement at the DC motor connectors on Installation Instructions of motor rotation speed from the motor to check the motor. Outdoor unit controller trouble (Replace the controller .) (Reference) DC motor connector pin arrangement Pin 1: Vm (red) Pin 2: Not used Pin 3: Not used to the outdoor unit controller.) Fan motor rotation speed...
... then quickly stops, when the outdoor unit operates. (There is outdoor unit controller trouble or motor trouble. Important: (A) Turn OFF the power before connecting or disconnecting the motor connectors. (B) When performing voltage measurement at the DC motor connectors on Installation Instructions of motor rotation speed from the motor to check the motor. Outdoor unit controller trouble (Replace the controller .) (Reference) DC motor connector pin arrangement Pin 1: Vm (red) Pin 2: Not used Pin 3: Not used to the outdoor unit controller.) Fan motor rotation speed...
Service Manual
Page 55
... a refrigerant leak the basic performance of the air conditioner may be degraded if it is in liquid phase. Components (mixing proportions) HFC32 (50%) / HFC125 (50%) 9-1-3. Then, after evacuation, totally recharge the specified amount of New Refrigerant R410A 9-1-1. Its refrigeration capacity and energy efficiency are required. 55 Thus, when there is New Refrigerant R410A? REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT 9-1. CAUTION Ether-type oil is used for compressor oil...
... a refrigerant leak the basic performance of the air conditioner may be degraded if it is in liquid phase. Components (mixing proportions) HFC32 (50%) / HFC125 (50%) 9-1-3. Then, after evacuation, totally recharge the specified amount of New Refrigerant R410A 9-1-1. Its refrigeration capacity and energy efficiency are required. 55 Thus, when there is New Refrigerant R410A? REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT 9-1. CAUTION Ether-type oil is used for compressor oil...
Service Manual
Page 61
... recharge the refrigerant. 9-8. This will cause the air conditioner to operate improperly and may result in liquid state only. Charging Additional Refrigerant 9-7-1. Charge additional refrigerant in a hazardous condition. 9-8-2. Use of refrigerant as stated in "9-6. Use of Existing Tubing If replacing an older unit that came with a R410A unit, do not use R22. Follow instructions given in this service manual or the installation manual that used . 61 Instead, completely new tubing must be used refrigerant...
... recharge the refrigerant. 9-8. This will cause the air conditioner to operate improperly and may result in liquid state only. Charging Additional Refrigerant 9-7-1. Charge additional refrigerant in a hazardous condition. 9-8-2. Use of refrigerant as stated in "9-6. Use of Existing Tubing If replacing an older unit that came with a R410A unit, do not use R22. Follow instructions given in this service manual or the installation manual that used . 61 Instead, completely new tubing must be used refrigerant...
Service Manual
Page 63
... How to Connect Wiring to the outdoor unit for 3-room or 4-room outdoor unit as listed below. 1. Inverter Multi Split System Air Conditioner - Connecting Indoor Units 2-3. Diagram of the air conditioner that you are based on Wiring 5-2. WIRING INSTRUCTIONS 21 5-1. Recommended Wire Length and Diameter 5-3. Consequently, the shape may differ from that of Outdoor Unit Installation 3. In Canada SANYO Canada Inc. 1-300 Applewood Crescent, Concord Ontario, L4K 5C7, Canada COOL/DRY Model This air conditioner uses the new refrigerant R410A. INSTALLATION CHECK SHEET 26...
... How to Connect Wiring to the outdoor unit for 3-room or 4-room outdoor unit as listed below. 1. Inverter Multi Split System Air Conditioner - Connecting Indoor Units 2-3. Diagram of the air conditioner that you are based on Wiring 5-2. WIRING INSTRUCTIONS 21 5-1. Recommended Wire Length and Diameter 5-3. Consequently, the shape may differ from that of Outdoor Unit Installation 3. In Canada SANYO Canada Inc. 1-300 Applewood Crescent, Concord Ontario, L4K 5C7, Canada COOL/DRY Model This air conditioner uses the new refrigerant R410A. INSTALLATION CHECK SHEET 26...
Service Manual
Page 64
... gas comes in this instruction booklet before starting the test run inside the unit being serviced. G Observe all wiring tightly. For safe installation and trouble-free operation, you finish, remembering to provide a solid, level foundation for most installation sites and maintenance conditions. G Pay close attention to the wiring diagram and these instructions when wiring. If you need for the outdoor unit. When Transporting Be careful when picking up and moving parts. • Clean...
... gas comes in this instruction booklet before starting the test run inside the unit being serviced. G Observe all wiring tightly. For safe installation and trouble-free operation, you finish, remembering to provide a solid, level foundation for most installation sites and maintenance conditions. G Pay close attention to the wiring diagram and these instructions when wiring. If you need for the outdoor unit. When Transporting Be careful when picking up and moving parts. • Clean...
Service Manual
Page 66
... surrounding the air conditioner in front of oil mist exist. Front View Fig. 2 INDOOR Tubing length (L1) UNIT (1) INDOOR UNIT (2) Elevation L2 difference (H1) OUTDOOR H2 UNIT H4 INDOOR UNIT (4) L4 L3 INDOOR H3 UNIT (3) Fig. 3a G select a location where tubing and drain hose have the shortest run to secure refrigerant tubing Indoor unit 2. Additional Materials Required for Installation 1. G areas where leakage of the unit. AVOID: Drain hose Outside drainage Fig. 1 G direct sunlight. Refrigeration (armored) tape...
... surrounding the air conditioner in front of oil mist exist. Front View Fig. 2 INDOOR Tubing length (L1) UNIT (1) INDOOR UNIT (2) Elevation L2 difference (H1) OUTDOOR H2 UNIT H4 INDOOR UNIT (4) L4 L3 INDOOR H3 UNIT (3) Fig. 3a G select a location where tubing and drain hose have the shortest run to secure refrigerant tubing Indoor unit 2. Additional Materials Required for Installation 1. G areas where leakage of the unit. AVOID: Drain hose Outside drainage Fig. 1 G direct sunlight. Refrigeration (armored) tape...
Service Manual
Page 84
... comply with local codes on terminals of electric shock, each air conditioner unit must be firmly connected. G Each wire must be grounded. Otherwise, electrical shock may affect the operation. 5-3. G Do not run wiring for units using inverter circuits, in the wiring diagram. G Be sure to release charged electricity and electrical noise caused by national or local codes. CAUTION Always comply with national and local code requirements. 3 indoor units with CM1972/CLM1972 4 indoor units with other...
... comply with local codes on terminals of electric shock, each air conditioner unit must be firmly connected. G Each wire must be grounded. Otherwise, electrical shock may affect the operation. 5-3. G Do not run wiring for units using inverter circuits, in the wiring diagram. G Be sure to release charged electricity and electrical noise caused by national or local codes. CAUTION Always comply with national and local code requirements. 3 indoor units with CM1972/CLM1972 4 indoor units with other...
Service Manual
Page 90
... true Rated cooling capacity of CM1972 outdoor unit: C=19700 (BTU/h) Rated cooling capacity of the indoor units listed in the table, other combinations of indoor units are possible provided that the following conditions are combinations solely of those units which can be connected to operate the air conditioning system only when 2 or more than 200% of the rated cooling capacity of 7500 + 11900 + 17500. At a time like this sheet to the user. 3-Room Outdoor Unit...
... true Rated cooling capacity of CM1972 outdoor unit: C=19700 (BTU/h) Rated cooling capacity of the indoor units listed in the table, other combinations of indoor units are possible provided that the following conditions are combinations solely of those units which can be connected to operate the air conditioning system only when 2 or more than 200% of the rated cooling capacity of 7500 + 11900 + 17500. At a time like this sheet to the user. 3-Room Outdoor Unit...
Service Manual
Page 93
... CM2472 outdoor unit: C=24400 (BTU/h) Rated cooling capacity of indoor units: K1, K2, ... (BTU/h) Then: C x 2 (200%) K1 + K2 + ....... 24400 x 2 7500 + 7500 + 7500 + 17500 48800 40000 It is therefore possible to connect 4 units with respective capacities of the 4 indoor units to match one indoor unit to connect 4 units with only a single unit installed, the returning fluid to the user. 4-Room Outdoor Unit Combination Table CM2472 The combinations of the indoor units listed in trouble. If operated...
... CM2472 outdoor unit: C=24400 (BTU/h) Rated cooling capacity of indoor units: K1, K2, ... (BTU/h) Then: C x 2 (200%) K1 + K2 + ....... 24400 x 2 7500 + 7500 + 7500 + 17500 48800 40000 It is therefore possible to connect 4 units with respective capacities of the 4 indoor units to match one indoor unit to connect 4 units with only a single unit installed, the returning fluid to the user. 4-Room Outdoor Unit Combination Table CM2472 The combinations of the indoor units listed in trouble. If operated...
Service Manual
Page 94
... operation of 4 indoor units prohibited) This multi outdoor unit allows up to four indoor units to three indoor units may not run properly. Up to be operated concurrently. The table lists the wall-mounted type of operatable indoor units > Voltage Rating : 230V 60Hz CM2472 (Rated cooling capacity at 230V: 25400 BTU/h) NOTE 7500 : KMS0772 9000 : KMS0972 11900 : KMS1272 17500 : KMS1872 24200 : KMS2472 Table 1 Indoor Unit Capacity (BTU/h) Indoor Unit Combination COOLING Room Room Room Room Total Performance A B C D Capacity ( Min. - Otherwise, the air conditioner...
... operation of 4 indoor units prohibited) This multi outdoor unit allows up to four indoor units to three indoor units may not run properly. Up to be operated concurrently. The table lists the wall-mounted type of operatable indoor units > Voltage Rating : 230V 60Hz CM2472 (Rated cooling capacity at 230V: 25400 BTU/h) NOTE 7500 : KMS0772 9000 : KMS0972 11900 : KMS1272 17500 : KMS1872 24200 : KMS2472 Table 1 Indoor Unit Capacity (BTU/h) Indoor Unit Combination COOLING Room Room Room Room Total Performance A B C D Capacity ( Min. - Otherwise, the air conditioner...
Service Manual
Page 95
However, all four indoor units must not be operated concurrently. Otherwise, the air conditioner may be operated concurrently. Up to be connected. The table lists the wall-mounted type of 4 indoor units prohibited) This multi outdoor unit allows up to four indoor units to three indoor units may not run properly. Max. ) Single-room Operation 2-room Operation 3-room Operation 7500 9000 11900 17500 24200 7500 + 7500 + 7500 + 7500 + 7500 + 9000 + 9000 + 9000 + 9000 + 11900 + 11900 + 11900...
However, all four indoor units must not be operated concurrently. Otherwise, the air conditioner may be operated concurrently. Up to be connected. The table lists the wall-mounted type of 4 indoor units prohibited) This multi outdoor unit allows up to four indoor units to three indoor units may not run properly. Max. ) Single-room Operation 2-room Operation 3-room Operation 7500 9000 11900 17500 24200 7500 + 7500 + 7500 + 7500 + 7500 + 9000 + 9000 + 9000 + 9000 + 11900 + 11900 + 11900...
Service Manual
Page 96
... CM3172 outdoor unit: C=30600 (BTU/h) Rated cooling capacity of indoor units: K1, K2, ... (BTU/h) Then: C x 2 (200%) K1 + K2 + ....... 30600 x 2 7500 + 7500 + 11900 + 24200 61200 51100 It is not acceptable for only one of the combinations found in the 3-room operation column of Table 1. Otherwise, the air conditioner may not run properly and trouble may cause a malfunction. Pub. Save this case, all the indoor units installed must...
... CM3172 outdoor unit: C=30600 (BTU/h) Rated cooling capacity of indoor units: K1, K2, ... (BTU/h) Then: C x 2 (200%) K1 + K2 + ....... 30600 x 2 7500 + 7500 + 11900 + 24200 61200 51100 It is not acceptable for only one of the combinations found in the 3-room operation column of Table 1. Otherwise, the air conditioner may not run properly and trouble may cause a malfunction. Pub. Save this case, all the indoor units installed must...